"Oh that's my Foe-Glass. See them out there, skulking around? I'm not really in trouble until I see the whites of their eyes."
Bartemius Crouch Jr, impersonating Alastor Moody[src]

A Foe-Glass is a type of Dark Detector. It looks like a mirror, but instead of a reflection it shows the enemies of its possessor. The figures appear as "shadows" but become clearer and more visible as the enemies get closer to the possessor.[1]



Moody Foe-Glass 2

The fake Moody and the shadows of his enemies in his Foe-Glass

Barty Crouch Jr, while impersonating Alastor Moody, had Moody's Foe-Glass in his office during Harry Potter's fourth year at Hogwarts School of Witchcraft and Wizardry. He said he's not really "in trouble" until he can see "the whites of their eyes."[1] Later in the school year, after Cedric Diggory's tragic death, it was revealed that Crouch's enemies shown in the glass were Albus Dumbledore, Minerva McGonagall, and Severus Snape, all notable members of the Order of the Phoenix. Crouch, however, was too focused on Harry at the time that he did not notice the shadows within the glass were becoming clearer, warning him that the three were soon approaching, which ultimately led to his exposure and downfall.[2]


When Harry and the other members of Dumbledore's Army first entered the Room of Requirement, he found, among other Dark Detectors, the fake Moody's Foe-Glass. By this time it was cracked, but still functional.[3]


Notes and references

  1. 1.0 1.1 Harry Potter and the Goblet of Fire, Chapter 20 (The First Task)
  2. Harry Potter and the Goblet of Fire, Chapter 35 (Veritaserum)
  3. Harry Potter and the Order of the Phoenix, Chapter 18 (Dumbledore's Army)
*Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, Fandom will earn a commission if you click through and make a purchase. Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+